sigma 18-50mm f/2.8 or tamron 17-70mm f/2.8?

hi all, i was wondering if anyone has experience shooting concerts with either the sigma 18-50 or tamron 17-70. were these lenses suitable?

i am planning to get a zoom lens to shoot concerts because i find switching primes to be a hassle, and would like more versatility in my shots.

do you think the tamron worth paying ~100 euros extra? please let me know from your experience.

thank you!